The Performance Tool W80577 Compression Tester Spark Plug Adapters Set is the perfect tool for testing the compression of your gas engines, including snowmobiles, motorcycles, outboards, and lawn equipment. This comprehensive kit includes multiple adapters such as 10mm x 1.0, 12mm x 1.25, 18mm x 1.5, and the special 16mm x 1.5 Ford adapter, ensuring compatibility with a wide range of engines. The rubber o-rings in these adapters provide a positive seal, allowing for accurate compression readings every time. Made with high-quality materials, this set is durable and designed to last, providing reliable performance for all your compression testing needs. COMPREHENSIVE KIT The Performance Tool W80577 Compression Tester Spark Plug Adapters Set contains all the necessary sizes to test compression for a wide range of gas engines, including snowmobiles, motorcycles, outboards, lawn equipment, and more. MULTIPLE ADAPTERS This set includes 10mm x 1.0, 12mm x 1.25, 18mm x 1.5, and the special 16mm x 1.5 Ford adapter, ensuring you have the right size for your engine. COMPATIBILITY These adapters are designed to fit our compression tester W80579 and others with a 14mm x 1.25 male thread, providing compatibility with a range of testers. ACCURATE READINGS The rubber orings in these adapters ensure a positive seal, allowing for accurate compression readings every time. DURABLE CONSTRUCTION Made from highquality materials, these adapters are built to last, providing reliable performance for all your compression testing needs.